The free agency period for NFL players begins on March 13 at 3 p.m., and the Cowboys won't try or be able to re-sign all 16 of their free agents -- 14 unrestricted, plus one restricted and one exclusive rights. Here is third installment this week counting down the five unrestricted free agents who are most likely to depart in 2019:

No. 3 -- TE Geoff Swaim

2018 impact: Swaim finished with a solid 26 catches for 242 yards and a touchdown in nine games. His season was cut short when he suffered a broken wrist in a November win over Atlanta, requiring surgery. None of the other tight ends had more than four catches when he went out, and he was considered the best blocker of the bunch. Dallas largely used a committee approach to try to replace tight end Jason Witten, the 15-year mainstay who retired last spring.

Why Swaim is unlikely to return: The Cowboys got a lot out of the former seventh-round pick from Texas. But he has been unable to remain healthy during his four seasons in Dallas. Plus, the Cowboys are pleased with the development of tight ends Blake Jarwin and Dalton Schultz, who came on after Swaim suffered the injury. They could also look to upgrade at the position in this year's coming draft, including a tight end who can become a reliable red-zone option.

The Dallas Cowboys veterans who are most likely to become salary cap casualties this offseason